Job Description

This role will begin with a six month agreement, renewable if the placement is successful.

 

RA3D is looking for a remote Backend Node.js Developer to maintain, improve, and extend our existing backend services. The role focuses on developing secure, scalable APIs, managing data models, integrating third-party services, and ensuring smooth communication between mobile/web applications and the admin panel.

 

You will work with an existing Node.js + Express + MongoDB codebase that includes JWT authentication, admin/user management, OTP flows, SMS/email integrations, and file upload features. Your responsibilities will include enhancing current modules, implementing new APIs, improving reliability and security, and cleaning up technical debt.

 

Responsibilities

 

• Develop, maintain, and enhance RESTful APIs built with Node.js, Express, and MongoDB (Mongoose).
• Implement new features across user, admin, and internal management modules.
• Improve existing controllers, services, models, and router structures.
• Maintain and enhance JWT-based authentication and token lifecycle management.
• Implement secure OTP logic, password hashing, and access control flows.
• Strengthen error handling, input validation, and general API security.
• Work with MongoDB and Mongoose schemas.
• Optimise queries, indexes

• , and data access patterns.
• Ensure proper consistency and migrations where needed.
• Maintain and improve integrations with, SMS gateways (e.g., Deewan API), Email services (Nodemailer), File upload systems (Multer).
• Add new third-party integrations when required.
• Refactor controllers and services to improve modularity and maintainability.
• Reduce technical debt and ensure consistent coding patterns.
• Improve error handling, logging, and request validation.
• Write unit and integration tests where required.
• Ensure stable deployments and assist with CI/CD improvements.
• Monitor and debug issues in production environments.

Job Requirements

Must Have

• Strong experience with Node.js and Express.js.
• Solid understanding of MongoDB and Mongoose.
• Hands-on experience with
  • JWT authentication
  • Role-based access control
  • OTP and token verification flows
  • bcrypt or similar hashing libraries
  • Multer and file uploads
  • Nodemailer or similar email libraries
  • Third-party API integrations (REST, tokens, authentication)
• Practical knowledge of async/await, promises, and error-handling patterns.
• Comfortable working with existing codebases and improving their structure.

 

Nice to Have

• Experience with Redis or caching layers.
• Background in building admin-panel APIs.
• Familiarity with CI/CD and environment management.
• Understanding of logging/monitoring tools such as PM2, Winston, or Sentry.
• Front end experience (React if full stack)

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